Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
thiudisk
←
Proto-Germanic
*þiudiskaz
(inherited)
←
Proto-West Germanic
*þiudisk
(inherited)
←
Old Saxon
thiod
(affix)
←
Old Saxon
-isk
(affix)
→
English
Dutch
(cognate)